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11

‘write data’ to DDRAM

DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

Ack

writes ‘H’

010010001

PH_

12 to 15

|

|

|

|

16

‘write data’ to DDRAM

DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

Ack

writes ‘S’

010100111

PHILIPS_

17

for write (as step 8)

PHILIPS_

18

control byte

Co

RS

0

0

0

0

0

0

Ack

100000001

PHILIPS_

19

return home

DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

Ack

sets DDRAM address 0 in address counter (also returns shifted

display to original position; DDRAM contents unchanged); this

instruction does not update the Data Register (DR)

000000101

PHILIPS

20

PHILIPS

21

slave address for read

SA6 SA5 SA4 SA3 SA2 SA1 SA0 R/W

Ack

during the acknowledge cycle the content of the DR is loaded

previous instruction neither a ‘set address’ nor a ‘read data’ has

been performed; therefore the content of the DR was unknown;

011101011

PHILIPS

22

control byte for read

Co

RS

0

0

0

0

0

0

Ack

DDRAM content will be read from following instructions

011000001

PHILIPS

STEP

INSTRUCTION

DISPLAY

OPERATION